[BangPypers] recursion not working

[Vivek Khurana]

On Mon, Mar 15, 2010 at 1:54 PM, Kenneth Gonsalves <lawgon at au-kbc.org> wrote:
> hi,
>
> here is a function I have written:
>
> def getaccbal(accnt,bal):
>    account = Account.objects.get(pk=accnt)
>
>    if account.vouch:
>        bal = bal + getledgerob(account)
>    else:
>        children = account.account_set.all()
>        for child in children:
>            getaccbal(child.id,bal)
>    return bal
>
> if I try this with bal=0, on each recursion bal gets reset to 0 and I always
> get a 0 as a result. (If I put bal=20, result is 20). Must be something very
> simple that I am missing.

 Look at the else block. you are calling getaccbal but not receiving
the return value in any variable. Unless you receive the value in a
variable or pass bal as a reference, bal will contain the old value.
If you are using OOP then you should be calling geraccbal as self.bal
.

regards
Vivek

-- 
The hidden harmony is better than the obvious!!